Valve for automatic control of supplementary liquids



July 25, 1939. l.. B. KIMBALI.

VALVE FOR AUTOMATIC CONTROL OF SUPPLEMENTARY LIQUIDS Filed April 8, 1938 2 u 3 f 4 a VL ,xk En- .l 5 i WM v/f/ :5% x

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Rg mM/7 NP www mw. d L mv. LEfC 5 ATTORNEY.

'Patented 25,` 1939 vALvE Fon. AU'roMATIc coN'rnoL or 1 SUPPLEMENTARY uoums Leo 1?. Kimball, New Haven, Conn., assigner to Fuel Development Corporation, a corporation of Delaware 4Application April 8, 1938, .Serial No. 200,860

1 Claim. (Cl. 137-153) This invention relates to the fractional supply of supplementary liquids to the intake conduits vof internal combustion engines and involves certain improvements over the valves described and 5 claimed inmy prior Patent No. 2,037,908 granted April 21, 1936.

In general, the valve described and claimed in the .present case operates automatically in much the same way as those of the type described and l claimed in my said prior patent but has certain valuable parts and advantages over that of said patent.

In my prior Patent No. 1,974,072 a Method of supplying a supplementary uid to an internal l combustion engine is claimed, and said method may be applied to the operation of the presentv valve.

Although the present valve is an improvement over the valve of my prior Patent No. 2,037,908, 20 it also includes means for manually varying the ilow of a supplementary liquid, regardless of-the action of the automatic means.

For a detailed description of a preferred form of the valve comprising my present invention, 25 reference may be had to the following description and to the accompanying drawing illustrating the same, in which,

Figure 1 is a side elevation, partly insection, showing the general form and some of the inter- 30 nal parts in section.

Fig. 2 is an end elevation showing especially the means for manually operating the controlling member or cam that may become active when necessary or in the event of an emergency, to 35 supply more of the supplementary liquid than would be supplied under restricted automatic action of the valve. Y

In the drawing the numeral I indicates a casing that is provided with means such as provided 40 by the flange 2 for attaching it to a second casing 3, containing a metering valve as in my prior patents, and a flexible bellows-like member l of the general types as those illustrated in the lowe'r part of Fig. 5 of my prior valve Patent No. 45 2,037,908. 'I'he supplementary liquid passes through the metering valve 3' by entering and leaving said second casing 3 through the pipe connections 5 and 6. Either of the pipe connections 5 or 6 obviously connects with a tank or 5o other suitable source of the supplementary liquid and with the engine intake, respectively. T'he pipe connection 1 communicates withthe supercharger or blower of an aircraft, or other suitable source of extraneous pressure that will act 55 to vary and control the action of the flexible belv lows-like means 8 within the main or horizontal portion of the casing l. The means 8 is provided with a projecting stud 9 that passes loosely through van opening about the same in the casing and is pivoted to one arm I0 of a bell-crank 5 lever that is rotatable on the shaft II. 'The other arm I2 of the bell-crank lever contacts with the outer end of the metering valve spindle as indicated at I3 and bysuch device the movement of the bellows-like means 8 is made effec- 10 tive upon themetering valve and the cut oif valve inthe second casing 3.

Above the arm I2 of the bell-crank lever I0-I2 is a cam member I 4, which in this form of the apparatus vconsists of a flattened portion of a transverse shaft I5 that passes through bearings in the casing I- and is provided at one end with a crank arm I6 or other member to which may be attached an operating connection, such as a rod or other device, that runs to any convenlent location on the instrument board of the vvehicle and Within easy reach of the operator.

Tube Ilruns to a pressure gauge.

In view of the above described arrangement of' the parts of my device it will now be seen that the supply of the supplementary liquid is controlled primarily by the pressure produced in the supercharger or blower which contains a rotating member that revolves in unison with and in proportion to the rate of rotation Vof the engine crankshaft or shafts. That rate and the power output is determined in the usual way by operation of the throttle valve to increase or diminish the speed of the vehicle or to provide more or less power such as when climbing hills or attaining greater altitudes. The greater the rate 'of rotation ofthe crank shaft, the greater will be the pressure produced by the supercharger orl blower and therefore the inflow of the supplementary fluid will be induced by the supercharger 40 action produced by the engine. Thus far, the action ofthe present valve is similar to that described in my prior Patent No. 2,037,908.

However, in case of emergency conditions or other demands that require certain quantities of the supplementary liquid not supplied by the automatic action of the valve, means must be provided whereby the pilot or operator' can be enabled to admit required quantities of the supplementary cam may be operated when an emergency or other unusual demand for the action of the supplementary liquid occurs. Then the pilot or operator may have recourse to the Acontrol member on the instrument board that moves transverse shaft I5 by actuating the crank arm I6 or other operative member. That will tilt the flat portion of the cam I3 so that the valve spindle oi the meterlng valve 3' and of the main admission valve within the casing 3 will be depressed, thereby opening such means to a greater extent (if previously open at all) and some or more of the supplementary liquid will be admitted to the mixing chamber or intake passages oi the engine.

In the case of an emergency. such as when the engine might become over-heated or on any other occasion that requires a greater supply of the supplementary liquid, takes place, the pilot or operator may operate the emergency control cam member I4 from the instrument board so as to supply a desired amount of the supplementary liquid.

From the above it will be apparent that the engine may be supplied with the supplementary liquid not only when certain power is required of the engine but also when the engine or external ,air conditions become abnormal at different altitudes or even when operating practically at sealevel.

Having thus described this form of my invention, I do not wish to be understood as being limited to the details thereof for various changes may be made by those skilled inthe art without departing from the spirit of my invention as set -forth in the accompanying claim.

What I claim and desire to protect by Letters Patent is:

A valve for controlling and metering the flow o! varying amounts of a supplementary liquid introduced under uid pressure to the intake 4passages of an internal combustion engine comprising an automatic bellows-like pressure responsive device, a movable metering member in said valve that is connected with and actuated by said device, an opening communicating with the space surrounding said pressure responsive device and adapted to receive a conduit running to the pressure portion of the intake passage of said engine, a second pressure responsive bellows-like device, connected with said metering member and having the external space about the same communicating with the aforesaid space, a mechanical connection between the movable parts of said bellows-like members and said metering member, and a manually operated adjusting device bearing upon said connection for controlling the opening of said valve and adjusting the position of said metering member when additional amounts of supplementary liquid that are not supplied through the action oi said pressure means are necessa LEO B. EZMSBALL. 

